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| Description: | GYRAL Razor Blade Sharpener |
| Manufacturer: | ? Specialties Mfg. Co., 1216 Mission Street, San Francisco, CA |
| Type: | Circular |
| Country: | USA |
| Patent: | |
| Comment: | The narrow curved edge causes the blade to flips to other edge on each rotation, as shown in the pictures. |
| Source: | twillard |
| Editors: |
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